ScreenUtils.java

package com.yaoyumeng.v2ex.utils;

import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.WindowManager;

/**
 * Created by yugy on 14-1-7.
 */
public class ScreenUtils {

    public static int dp(Context context, float dp){
        Resources resources = context.getResources();
        int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, resources.getDisplayMetrics());
        return px;
    }

    public static int sp(Context context, float sp){
        Resources resources = context.getResources();
        int px = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, sp, resources.getDisplayMetrics());
        return px;
    }

    public static int getActionBarHeight(Context context){
        int[] attrs = new int[] { android.R.attr.actionBarSize };
        TypedArray styledAttributes = context.getTheme().obtainStyledAttributes(attrs);
        int actionBarHeight = (int) styledAttributes.getDimension(0, 0);
        styledAttributes.recycle();
        return actionBarHeight;
    }

    public static int getDisplayHeight(Context context) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        wm.getDefaultDisplay().getMetrics(displayMetrics);
        int displayHeight = displayMetrics.heightPixels;
        return displayHeight;
    }

    public static int getDisplayWidth(Context context) {
        DisplayMetrics displayMetrics = new DisplayMetrics();
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        wm.getDefaultDisplay().getMetrics(displayMetrics);
        int displayWidth = displayMetrics.widthPixels;
        return displayWidth;
    }

    public static boolean isTablet(Context context){
        return(context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK)
                >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }
}